<template>
  <div id="home">
    <nav-bar class="home-nav">
      <div slot="center">购物街</div>
    </nav-bar>
    <home-swiper :banners="banners"/>
    <recommend-view :recommends="recommends"/>
    <feature-view/>
    <tab-control :titles="titles" class="tab-control" @tabClick="tabClick"/>
    <goods-list :goods="showGoods"/>
  </div>
</template>

<script>
    import HomeSwiper from "./childComps/HomeSwiper";
    import RecommendView from "./childComps/RecommendView";
    import FeatureView from "./childComps/FeatureView";

    import NavBar from "components/common/navbar/NavBar";
    import TabControl from "components/contents/tabControl/TabControl";
    import GoodsList from "components/contents/goods/GoodsList";

    import {getHomeMultiData} from "network/home";
    import {getHomeGoods} from "network/home";

    export default {
      name: "Home",
      components: {
        HomeSwiper,
        RecommendView,
        FeatureView,

        NavBar,
        TabControl,
        GoodsList
      },
      data(){
        return{
          banners:[],
          recommends:[],
          titles:["流行","新款","精选"],
          goods:{
            'pop':{page: 0,list: []},
            'new':{page: 0,list: []},
            'sell':{page: 0,list: []}
          },
          currentType:"pop",
        }
      },
      created() {
        //1.请求多个数据
        this.getHomeMultiData()

        //2.请求商品数据
        this.getHomeGoods('pop');
        this.getHomeGoods('new');
        this.getHomeGoods('sell');
      },
      methods:{
        /**
        * 事件监听
        *
        * */
        tabClick(index){
          console.log(index);
          switch (index){
            case 0:
              this.currentType='pop'
              break;
            case 1:
              this.currentType='new'
              break;
            case 2:
              this.currentType='sell'
          }
        },



        /**
        * 网络请求
        *
        * */
        getHomeMultiData() {
          getHomeMultiData().then((res=>{
            this.banners =res.data.banner.list;
            this.recommends =res.data.recommend.list;
          }));
        },
        getHomeGoods(type){
          const page = this.goods[type].page+1;
          getHomeGoods(type,page).then(res=>{
            this.goods[type].list.push(...res.data.list);//结构语法
            this.goods[type].page+=1;
          })
        }
      },
      computed:{
        showGoods(){
          return this.goods[this.currentType].list;
        }
      }
    }
</script>

<style  scoped>
  #home{
    padding-top: 44px;
  }
  .home-nav{
    background-color: var(--color-tint);
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    z-index: 9;
  }
  .tab-control{
    position: sticky;
    top: 44px;
  }


</style>
